Turning around at the diminuitive use of his name, Theo sat back so that he was semi-crossed leg on the floor, a faint dark-grey pencil smudge against his cheek. He tilted his head at Draco consideringly, captured by the hair colour in a way he always was. "You're not my father..." he said, somewhat hesitantly like he was more trying to tell himself that than Draco.
He crawled forward a little, careless of the fact that he was doing this but his frame so thin and his moves so smooth that he managed not to look as ridiculous as he should have. He stopped and knelt back on his knees like he was praying. He turned his head to look over his shoulder, slowly like he was trying not to disturb whatever it was he thought was there, and then he looked back to Draco, putting his finger against his lips in a shushing gesture before beckoning his former classmate down with him.